Roller cutter attachment for drills.



T. BARNES.

ROLLER CUTTER ATTACHMENT FOR DRILLS.

APPLICATION FILED NOV. X8. 1914.

2 SHEETS-SHEET 1- THU! oooooooooooooooooooooooooooooooooooo c,

T. BARNES.

I ROLLER CUTTER ATTACHMENT FOR DRILLS.

APPLICATION FILED NOV. T8. 1914.

1,148A28, I Patented July 27, 1915.

2 SHEETS-SHEET 2.

TED STATES PATENT UFFIfiE.

ROLLER CUTTER ATTACHMENT FOE DRILLS.

Specification of Letters Patent.

Patented July 27,- refs.

Application filed November 18, 1914. Serial No. 872,823.

To all whom it may concern Be it known that I, THOMAS BARNES, a citizenof the United States, residing at Rockville, in the county of Parke andState of Indiana, have invented certain new and useful Improvements inRoller Cutter Attachments for Drills; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to the letters and figures of reference marked thereon, which form apart of this specification.

This invention relates to new and useful improvements in harrows andconsists essentially in the provision of a harrow having swinging armsadjustably held together and pivotally mounted upon the harrow frame andin the provision of yielding bowed members upon which the harrow disksare journaled.

The invention consists of various details of construction, combinationsand arrangements of parts which will be hereinafter fully described,shown in the accompanying; drawings and then specifically defined in theappended claims.-

I illustrate my invention in the accompanying drawings, in which: t

Figure 1 is a top plan view of my improved harrow. Fig. 2 is a sideelevation of a part of the device, and Fig. 3 is a bottom plan View.

Reference now being had to the details of the drawings by letter, Adesignates a harrow frame of the usual construction and B. B designatebeams which are pivotally connected to the frame by means of the pivotsC, the forward end of each beam B being inclined and adapted to contactwith the sides of the beam A to limit the inner throw thereof. Otherbeams, designated by letter D of similar construction, are pivotallyconnected by means of the pivots E to the frame opposite each other.Fork-shaped members F are pivotally connected to the outer end of eachbeam B and D and a turn buckle G connects the adjacent ends of themembers F, adapted to regulate the distance between the same.

Yielding bowed members I are pivotally fastened at their ends to the twobeams B and D and each member I is slotted as at J. A disk K ispivotally mounted upon an axis K which is journaled in suitable bearingsin each bowed member, each disk being adapted to turn in a slot in saidmember. Bracket members L are fastened to the rear side of the frame andhave bearings L therein in which the axle N of the disk 0 is journaled.Hoes, designated by letter S, are fastened to each beam and to theframe.

In operation, the various beams upon either side of the frame may bemoved to different adjusted positions accordingly as it may be desiredto change the relative posi' tions of the disks, the parts being held indifferent positions by thetightening of the bars at their pivotal pointsin any suitable manner.

What I claim to be new is 1. An adjustable harrow consisting of a frame,beams pivotally mounted upon the frame and having their forward endsinclined adapted to contact with the opposite sides of the frame tolimit the inner throw of the same, other beams pivotally connected tothe frame and connected to the first referred to beams, slotted bowedmembers connecting the beams on either side, and harrow disks mountedone upon each bowed member and adapted to turn in the slot thereof.

2. In combination with a'harrow frame, oppositely disposed beamspivotally mounted toward the forward end of the frame, means forlimiting the inner throw of said beams, other beams pivoted behind thefirst mentioned beams, forked members pivotally connected to the outerends of each beam, a turn buckle connecting the forked members. slottedbowed members pivotally connecting the beams upon each side of theframe, harrow disks pivotally mounted upon each bowed member and one ineach slot therein.

In testimony whereof I hereunto affix my signature in presence of twowitnesses.

F. C. YEAGER, [Ls] GEORGE J; STARK. [L.S.]

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Eatenta, Washington, D. G.

